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      Question

      Which longitude is designated as the International Date

      Line?
      A 0° Correct Answer Incorrect Answer
      B 90° W Correct Answer Incorrect Answer
      C 90° E Correct Answer Incorrect Answer
      D 180° Correct Answer Incorrect Answer

      Solution

      The International Date Line (IDL) is located at approximately 180° longitude, opposite the Prime Meridian (0° longitude). It is not a perfectly straight line but zigzags to avoid dividing land areas and island groups. When crossing the IDL from east to west, a day is added to the calendar; when crossing from west to east, a day is subtracted. This imaginary line serves as the point where the date changes by one day when crossed.

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